linux-kernel - Re: [PATCH v3 02/14] dt-bindings: media: rkisp1: Add i.MX8MP ISP example

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Date:   Mon, 21 Nov 2022 15:50:47 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Paul Elder <paul.elder@...asonboard.com>,
        linux-media@...r.kernel.org, Dafna Hirschfeld <dafna@...tmail.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Helen Koike <helen.koike@...labora.com>,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 02/14] dt-bindings: media: rkisp1: Add i.MX8MP ISP
 example

On Mon, Nov 21, 2022 at 12:16:41PM +0100, Krzysztof Kozlowski wrote:
> On 21/11/2022 11:38, Laurent Pinchart wrote:
> > On Mon, Nov 21, 2022 at 09:04:29AM +0100, Krzysztof Kozlowski wrote:
> >> On 21/11/2022 06:09, Paul Elder wrote:
> >>> On Sun, Nov 20, 2022 at 11:36:31AM +0100, Krzysztof Kozlowski wrote:
> >>>> On 19/11/2022 07:55, Paul Elder wrote:
> >>>>> On Fri, Nov 18, 2022 at 02:06:14PM +0100, Krzysztof Kozlowski wrote:
> >>>>>> On 18/11/2022 10:39, Paul Elder wrote:
> >>>>>>> From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> >>>>>>>
> >>>>>>> Add an example to the rockchip-isp1 DT binding that showcases usage of
> >>>>>>> the parallel input of the ISP, connected to the CSI-2 receiver internal
> >>>>>>> to the i.MX8MP.
> >>>>>>>
> >>>>>>> Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> >>>>>>
> >>>>>> Missing SoB.
> >>>>>
> >>>>> I don't quite understand. I see an SoB right there.
> >>>>
> >>>> Laurent did not sent it. Did you run checkpatch before sending?
> >>>
> >>> That's why he's on the "From:" in the beginning. checkpatch says it's
> >>> fine.
> >>
> >> Ah, indeed, checkpatch misses that feature (it's part of Greg's
> >> verify_signedoff.sh). Anyway, your SoB is missing, as Laurent did not
> >> send the patch.
> > 
> > I thought adding an SoB was only required either when making changes or
> > when pushing commits through git, not when forwarding patches on mailing
> > lists ?
> 
> Anyone touching the file should signed it off. You cannot send it
> without touching (e.g. git format-patch).
> 
> https://elixir.bootlin.com/linux/v5.19-rc5/source/Documentation/process/submitting-patches.rst#L397
> 
> https://elixir.bootlin.com/linux/v5.19-rc5/source/Documentation/process/submitting-patches.rst#L420

The second link states

  SoB chains should reflect the **real** route a patch took as it was
  propagated to the maintainers and ultimately to Linus, with the first
  SoB entry signalling primary authorship of a single author.

This series will (eventually) be upstreamed by me through a pull request
to Mauro. Paul's SoB will thus not be needed. Of course you have no way
to know this when reviewing the series on the list.

Adding a SoB line when taking a patch in a git tree is standard
practice, but when posting unmodified patches to a mailing list, there's
more of a grey area. Look at
https://lore.kernel.org/all/20221024113058.096628238@linuxfoundation.org/
for instance, posted by Greg, but without his SoB.

-- 
Regards,

Laurent Pinchart